palmer



H. P. PALMER.

TOOL HOLDER FOR LATHES.

APPLICATION FILED AUG-7. m7.

1,323,092. Patented Nov. 25, 1919.

2 SHEETS-SHEET l.

H P. PALMER.

TOOL HOLDER FOR LATHES.

APPLICATION man AUG-7. um.

1,323,092. Patented Nov. 25, 1919.

2 SHEETS-SHEET 2.

nnrrnn s rains P TE QFFICE."

HORACE I. PALMER, 0F MANCHESTER, GEORGIA -.TOOL-HOLDER FOR LATHES.

To'all whom it may concern: y t known that I, HORACE B. PAL ER, c tizen of the United States, resid ng at 'liianchester, in the conntyof Merriweather and State of Georgia, have inventedcertain new anchuseful Improvements in Tool- Holders for Lathes, of whichthe following 'is aL; peciiioation, referencebeing had therein 'totheaoc'ompaiiyin'g' drawing; i

. This invention'relates to 'toolholders for lathes, and mo e particularly it of attach inent adapted to be appliedto the ordinary "tool post of standard construction.

'i i iile t t d -fmf t e; me of the tool holder is subjected to considerable strain, and regardless of the particular type of tool holderifinserted in, the slot. of the tool post, the strength of the 'to'ol hol'der "is largely determined by the; strength oftlie 'It is the'in'a-in object of the pre'sent' inirention to 'proi ide 'atool head with means for receiving 'a boring bar' or tool holder, the head being adapted to be readily applied to the ordinary tool post. and rigidly supported in position; and at- 'the' same time aidaptedt'o he removed, or adjusted 'at will, with the result that by interchanging the tools on the tool bar, the lathe'iss u'sceptible ofa variety of uses in connection with both inside and outside work. i y I lMore particularly the invntionincllides a? tool "bar holder or head adapted to have a sleeved engagement with the ordinary tool post, with means for securing-the head in position whereby to oonstitute a rigid support for thehar when inuse.

v It is a further'object-of' the invention to provide a-tool head of the oharaeterdescribed adapted to be applied to the ordinary tool post; ind adapted to be" readily adjusted horizontally about a vertical axis provided bythe tool post, and held inadjusting position; or at different HILJGR whereby to adapt the tool bar to Various uses.

inother iteature of the invention resides in the PIOV-lSlOl'l of novel means, foz retalm Specification of Letters Patent. Patented Nov, 25,1919, l }Appl ication filed August 7, r I i r 1917. Serial No. 184,950. 7

ing the toolhead in adjusted positions, and associated means permitting the retaining means to be readilyreleased.

Another important feature oftheiriyention includes means jv'whereby the ordinary screw threaded connections or} retaining means tor the various parts may he 'eli ni; 'nated, thus oyercoiiiinix the fohjetltitinsi' inhit t lSI 7 PPi1i .thib i. i 'theuse of the retaining means of. p ice; 's'tructionsf" Q; y A further object theinir'ention t )n i" rid hees ia me li r 9l'i"9 imp n gn d, n t fli'ct q. i i r n but few pa "s, strong aiid'- rigidinolrstiiue 'tion, inexpensive toproduc e, highly effioient and fsatisfahftory use; N "Another ifeature'o'f the inw' entiorr is to do away with; f so, far' aspos"sihle airman 'i ihrationand chattering incident-to? tb'ol Holders of ordinary const ru'ctioii,- it" being borne in mind in this connection that when the tool holder or shank is supportedfingithe usual'slot of the toolpost; the: tool is positioned at a point considerably removed from the I supportin g part of thetool post, "with the result that the tool} is not as-rigidly" supported as coulcl'be desifed and there i's' 'm'oi'e or less vibration "the wolf-particularly when heavy work'isto' be; encountered. Still other and further imjilbvei'n'ents; novel detailsin the? construction and "arrarigement' of the "various fiart s df "my' -in vention willhe applfeoiated ffol h thj descriptioii to follow? Whichflfor' =clearf-u d n standing of the invention isto Considered in connectiongwith'theaocompanying drawings, wherein is" disclosed; for the p'urpose'o'f illu tration,-- a convenient and satisfacton'y embodiment-'of-theinventioni 95 'In the drayvin'g'sQFigure 1 is'a top-[plan iew 'of myfattachmentu im' In --Fig. 2' is an end elevation of the-attachment applied to the=ordinary :tool-:post.

Fi 3 is a 'vertical s ection suhstantially 0 connectionwithlathes ofiordinary construction', andhaving the ordinary inverted T- shaped slot or dove-tail groove (2) adapted for the reception of-thei;;slidei"block (3). The slide block has a central recess therein whereby to provide a sleeve-d eng gement" with the tool post (4) having Ii'lOUJ'ltEClfit the-lower end-thereof:.janannularenlarge ment or collar (5) adapted toengage within a cut-out part in the 'base of 'the slide ;block (2 so asto [be substantiall flush with the. llowerisiirfaee of saidslide bloc-hand constituting a continuation thereof, though rotatably movable 1 relative thereto. The tool post; has th e usual, transverse. slot" or receiving for the receptionof the: 1 eld ra an't a tQ' "b la d i Pla e. hl'fiiii -fih' me n f-t ell n memorable --.b. 1 e h v 'i e e threads t engage. ilteif fllll fied f d (in the wall 'of the tool'post surroundingthe l nsitud na -bere her of. f The! pai'tsl'ljilslfijdespnibe. tf what is gn iik io an a fi n t ma sepee -s ivering h lts! i St nd d Q0 striiqitio n is structure of this type that the pres ent finvention its, Qparticu- (le ly a n iee le sh c e iie b "s this eonnectionlthat theiiniproved aw k ns-hear re o ed at will; w nhythe toel' postmay be adapted to ordinary and: functions without. improved ati" 1 5'11) Slce. ved, upon thetoolpost is an *annular supporting andgretention, blook (17) 115v- .rngia depending-elongated flange (8) forming; a tongue to, engage, between the walls of ,the groove ,(2); y at the :reduced upper portion; :thereofi gsaid flange being; adapted to rest upon theaupper surface of the slide b ock iia-lsif lhei an euppe em block (7) has a,series ofttapered or conica openin'gs (8 therethrough, conveniently at the periphery; gthereof, :so as to slightly break the wall and provide for slight expansion of the tapered walls surrounding the openings; 1 LADY; idesira ble; number f; openings (8 may be provided, depending-upon the degree of-adjustment desired, and the uses to which the toolibarzi's put.';thongh'I have .fo'undg it convenientand, highly satisfactory to employ three openingswhich permitsiof three adjustable; positions for the tool head to be-deseribed, when. the supporting block "(-8)-is in one posit-ion; on the tool post, and three additional adjustments when-said suppertingiblock' (8) is in a'reverse position on the'tool post-.:- 7

The tool head adapted to be'ajpplied to the supporting post'includes a base orbody portion proper (9) the same having a tool post receiving opening 10) connecting with annular enlargement (11.) in the base thereof, donning a receiving chain ber or space, for the reception of the. supporting block" ('8) with which latter the tool head hasa" relative rotatable adjustment about the tool post as an axis. Projecting through the body "portion of the tool head is a tt-onical aperture (12) adapted for the reeep'tion of a bolt (13), the tapered shank of which is adapted to *passthrough said aperture (12),jandaci cording to the angular disposition of the tool'head, engage'one of the openings (8) in the supporting or, re,tention block Conveniently the; parts are so proportioned that the ,tapered bolt when fully seatedto snugly engage the surrounding wallspflthe head (9) andretention block 8),; the lower endof th'e/shankfo'f the bolt. (13) will be adjacent toil, or inleontact; "with, the v -upper surface of the slide .rest' (1) .whei eby. to prevent further?downwardgnovementpt the bolt l3 under the aetionlfof a hammer or the likei hfl h li 4). or t eol which mightitend to unnecessarily expand or strain the parts, resulting :Ihis limitation; pfwthe movement retaining bolt also; tend o pr ve any 11 f i 'ssae'y binding between the 2 bolt and foperatively associated .surro inding wan, ,with; theresuit that the bolhmaynbe more readi1 .,.de-

tached or moved to aireleasingiposition r :In order ,to assist-inthe releaseiofithe bolt l.( 13) it may be desired toi providea'ireleasing leveror the like directly upon the, attach- .ment', and ate ,this end, I have provided'a curved lever (15 arrangedqin a; cut-out part (15) of the slide rest 1) and-preferably mounted as by a ipintlei, (16) wvhereby one end".'(17) thereof will engage beneath the head (14;) of thc bolt; whereas the opposite end is adapted tobe-engaged by anyasuitable tool as a hammenwhich upon giving aslight tap upon said-opposites end otthe leverwill raise'the end. (17-) and liiit, the bolt l4) :into releasing position w 5,. 1

vA filler block? (1581):isiada'pted to engage in theslot(5) between the bolt (6.) and the upper surface of thebody' portion (9) of the head whereby to secure theheadc'and pjarts associated therewith, in; rigid position on the slide rest Thehead 9) is enlargement-(.19) a having longitudinally extending. opening (20) adapted for the reception of anel'ongated tool bar (21:), which said tool :bar hasin theperipherythereof longitudinally spaced 1 transverse recesses (22) adapted to be engagedi'by a tapered bolt (23) to be positioned in a taperedrecess (2i) projecting vertically through the-en,- larged portion (19) of the tool-head. Con venientlythe tapered bolt (23) and associated parts are so proportioned that when said bolt is in -snug'ly seated position; the lower terminal thereof will be adjacent to or incontact with-the upper surface of the slide rest*(l), ,whereby to limit the down- 'T-'- 5 H I provided Iw-ith a rearward ward movement of the bolt under theact'ion of} a driving tool, and overcome unnecessary strain on the adjacent parts, as generally understood fromthe abovejdescription of the construction, arrangement and operation of the retaining bolt (13); Likewise if desired the retaining bar (23) may be "provided with slitting attachment such as the lever (15):heretofore described, it being unnecessary to duplieate this 'partin the drawing at thisposition'; f

r The" plurality of the transverse recesses (22) provides for s'implemeans of'l0ngitudinal-adjustmentfor the toolbar, and when the retaining'bolfl-(23) is in position, the toolba r will be-positively-and r'igidlysupported {against both v rotatable, longitudinal, or -vil)ratory movement relative to the head. "The tool-beret its terniin'al'is designed to su "port tools of yariousdesigns and character-whereby to adapt-the bar for practically a l-1u ses. Conveniently one -endfiof the tool 1mis prcvidew with s ti'an'sverselyextendingsubstantiany'square -ppening" (25) sea 1;-

5 ed toreceive atoo1 '(26){ coni eniently" sfgfid for chasing: inside 1 and 1 outside threads,- etc."; This ft'o'ol conveniently has a beveled edge (27) and the tool bar *has" extending therethrou'gh' f a tapered" Y aperture '(fonhectingfwith th e'ito'ol epenin'g and adapted for the reception ofa ta ered secur- 111g pin *(28) whereb'y to rigidly support the to'oliin position;

"l"he"-"tool"bar at its 1 opposite endis provided with angularly'j disposed oppositely extending tool freceivinfg :s'lot s-(29) and (29*) whereby to adapt the bar "at this end for both inside andoutside "workjthe tool 30 having a substantially -'square shank 'Withatapered edgeand adapted to-"be eng'agetl by a tapered pin or bolt (31-);p'1ojecting-Fthrough 'a tapered aperture (32') in" the merrier, the said aperture" connecting with "both of said tool'receiving'ooenings, whereby to engage the'fiared Side of'sai'd tool when in position in either of the square Openings provided therefor. "1

The peculiar retaining nieanslforthe tool on the toolbar is ofpartieularedyantage wheiijthe' bar is "used for boring, since the retainingbo'lts or pins (28) and (31) respectivelyfmay be devoid of heads or unnecessary prolongations, ;c -'onstituting obstructions "be yond the periphery of the ba1",'and if desired the bar may have one or niore'counteisunk portioiisjto'allow for a projecting end ofthe pins; which proj e'ction does not extend b'eyond'th'e periphery of thcjbar at its greater dianieter. g K

The securing pins'(28)"and ,(31) are also of especial advantage'overjthe ordinary set screws \i'hichengage one edge'of the tools, since the toolsas it'oilnerly held oftentimes b'ecame loose and because. of the wear on the 'tlireads, etc, it is necessary to replace the threaded bolts or screws, or assuming that the threads of the'tool bar become worn, an entirely new bar is brought into play.

The operation of the attachment may be reviewed as iollowsz- I Assuming it isjdesired to utilize'the lathe in? boring purposes, and'the bore is of considerable depth, iii wliicli eventit would be impractical to utilize the tool post for supporting the toolg' 'because of the undue strains, my attachment irrieadily applied by a sleeyed engagement-tothe tool post, and assiuni n g that the retaining bolt (13) is in released position, the :tool head is swung aboutthc post as an axis until the-proper angle according to the desired work "is ob tained; Then the retaining bolt(13)is then engaged by a hammerior the like and forced 'into' locking position in 'on-e'of the recesses (8), and preferablyin 'contaet with the upper surface of; the slide'f rest- (1). This retaining means Will -positively; lock the head from rotatable adjustment i'elati'i e to its support or retentionbl.oek-"(7')and thereupbirthe threaded 'bolt"(6 offthe tool {30st is moved into} its position "against the filler block (.18) whereby :the I head and associ'ated parts is firmly supported upon the slide rest (l).- The retaining 'boltor pin (93)" being in released position, t-li etool balr is adjusted longitudinally imtilthe desired recess or notch (22-) {is brought "in ali'nement with the retaining bolt-(esywhereapon the lat-ten is' seatcd, through the '1nediun'i"of "a hammer or thei-likej therebj' rigidly securing the bar in position.

The desirable tool or tools being inserted in the' end oren'ds of the tool bar, the tapered retaining pins (28)2ii1d are set into. binding'engagement with the tapered wall of the recessin tli'e -liarvan'd'the flared edge ofthe tools wherebyt'o rigidlysupport thelatter in position; j l It is to be borne in minl that 'thevarious H retaining pins'or bolts, 2'. e. the inembersil'3, -23, 2S and 31,- are preferably of: such material having wear-resisting properties or qualities, coi'ivenicntly case hardened metal, and while l'have illustrated and'deseribed a means iflOUniGtl directly;'i1 oonffthe attach 1'15 ment for releasing the-'pi'nsor bolts 1 and 23 it [is tobe borne in mind that an ordinary fend 'wrench 01" similar tool having means to engage beneath the heads of said pins li'l'aybe "bro germs play for releasing t-li'esalilel'f" L j WVhat-l claimisx 1. An zittachment for, tool posts, comprising a horizontally disposed body part havingia central'opening thereinwhereby to engage v j1--um" tool post for rotatabl adjustment, the wall 'sm-roundingtheopening being'continuous and unbrk ikenfand an integral elongated horizontally disposed tubular part fem-111g" tool "bar '-1'eceivi11g '1'30 opening, the wall-of whichop'enin table or; lengthwise movement.

is also substantially' continuous and unbro (en, pin and; socketmeans-for positively locking the body part :in different positions about the axis of the tool post,-a tool bar projecting through said tubular part, and common pin and socket for positlvely locking the tool bar against rotatable and longitudinal movement.

2.1K boring head attachment for tool posts comprising a body part having a vertically' disposed cylindrical opening for receiving diheftOOl pOSt and a horizontally disposed cylindrical opening for receiving a toolbar, said body part being adapted to swin about the tool post as an axis, means for; etachably securing said body part in place, aitool bar shaped to conform to the interior wallfof the horizontal opening and having transverse grooves intermediate its ends and a locklng pin pro ecting through said wall'toj engageeither .of said grooves to maintain the tool bar fixed against rota- 1 iAirboring {headir-attachment ior tool pojstscoinprising a body part adapted to be .mounted, upon 5 aetool post i for adjustment n an integral. tool bar Zsupport; having a horizontally disposed' opening the wall of rwhich-wyis icylindrical F and unbroken, a' ,tool bar,.-the, body portion gof which is round in orossseetion and; has in the periphery thereof intermediate its end a plur'ality of transverse. grooves, a ;locking pin tapering from end to end projecting through the tool bar support and adapted to engage any of said grooves ,whereby ,to positively lock the tool partifromdengthwise and rotatable movement in {said support.

4:. Ainattachmention tool posts compris- --ing,a tool supporting member havingva cylindrical opening" intermediate its sides whereby to engage over the tool post and to have relative rotatable movement, a looking member to project beneath said tool supporting member, and a pluralityof engaging parts to be engaged by the locking memberinthe-different positions of the tool support relative to the tool post whereby to maintain? the tool support in diiferent rotatable adjustable positions.

5.. An attachment for tool posts comprisabody part of inte ral construction having "a .central opening adapted to removably and adjustably engageoverithe toolpost, said body part having a tool bar receiving part including an opening extending therethrough, the wall of which is continuous, a tool bar positioned in said opening, said tool bar being longitudinally adjustable relative to said opening and means for positively securing the same in adjusted position, said means including a tapered bolt adapted to engage cooperating recesses in the tool bar receiving part and the ,tool bar.

6. An attachment for tool posts comprising a member adapted to be removably positioned on the tool post and having an integral horizontally disposed, unbroken extension forminga toolbar receiving opening, a tool bar positioned: in said opening, the walls surrounding said opening and the tool bar being providedwith transverse recesses, and a tapered bolt common toand adapted to engage on one of said cooperating recessed portions to rigidlysupport the bar in adjusted horizontal positions,- said bolt terminating in a headed end. I

7 In a device of the character desoribed, the combination of a supporting bed shaving a transverse groove, a tool post mounted for slidable movement in said groove, a member connected to the toollpost, for-slid able movement therewith, a toolbar, support comprising body part withla central opening sleeved upon the toolpost for rotatable ad ustment, means for-locking said body P t s ber in its t erent-iposi ons f adjus m nti d saidlb dy, pantllaving-an integral-horizontally -,disposed elongated tubular extension forming-1 a tool bar support.

' 8.,-:An;:attachment .for tool posts comprising a toolbar supported memberga toolbar positioned... on said, member, and having a plurality of angularly disposedopenings therethrough at one end thereof for. the reception of tools, said .tool .;bar also having a transversely extending opening in communication with both .the said tool, receiving openings, and a tapered pin adapted to'engage saidtapered opening to removably secure: a tool in either of said angularly disposed openings, v

9. A removable; tool bar attachment'for tool .posts comprising ahead having means for supporting a tool bar, said head having a sleeved engagement with the tool post, whereby to be rotatably adjusted about the tool post as an axis, and means for retaining said head in adjusted positions, saidmeans -including a member havinga seriesof circumferentially spaced openings; and a tapered bolt positioned in a tapered opening in the head and-adapted to engage anyone of said circun'iferentiallyv spaced openings.

10. A removable attachment for tool posts having a slide rest and; toolpost positioned thereon, a member positioned on said rest and having circumferentially spaced openings therein, a head sleeved upon the tool post for rotatable adjustment, and a tapered bolt mounted 011 the head and 'adapted to engage one of the openingsto retain the head in adjusted position. v

11. In combination with a tool post having the usual slide rest-with a groove in the upper surface thereof, aslide block in said groove and a tool post projecting upwardly from the slide block, of a tool head having a sleeved engagement with the tool postfor rotatable adjustment, a member having a tongue set in said groove of the slide rest, and having a tapered opening therein, and atapered pin on the head to engage said tapered opening to secure the head in position.

12. In combination with a tool post having the usual slide rest with groove in the upper surface thereof, a slideblock in said groove and a tool post projecting upwardly from the slide block, of a tool head having a sleeved engagement with the tool post for rotatable adjustment, a member having a tongue set in said groove of the slide rest, and having a tapered opening therein, and a tapered pin on the head to engage. said tapered opening to secure the head in position, and means on the head for releasing said pin.

13. In a lathe attachment, the combina tion of a slide rest having grooves in the upper surface thereof, a tool post positioned in said groove andv projecting upwardly therefrom, a tool bar support having a sleeved engagement with the tool post, said support having a vertical opening therethrough, a member interposed between the tool bar support and theslide rest and having a tongue projection positioned in said groove, said member having tapered openings therein, and a tapered bolt positioned in' the vertical opening of the tool bar support and adapted to removablyengage the tapered opening of said member.

14. A lathe attachment comprising a slide rest having a groove in the upper surface thereof, a tool posthaving a part positioned in said groove, said tool post having a transversely extending opening and a longitudinally adjustable bolt in the upper end thereof connecting with said opening, a tool bar head having a horizontally disposed opening, a tool bar positioned in said opening, said head having also a vertically disposed opening sleeved upon the tool post, said head being mounted for rotatable adjustment, means interposed between the head and slide rest for supporting the head in adjusted position, and filler block interposed in said slot in the tool post between said headand the lengthwise adjustable bolt for retaining the head in place.

15. A removable tool bar attachment for tool posts, comprising a head having means for supporting a tool bar, said head having a sleeved engagement with the tool post, whereby to be rotatably adjusted about the tool post as an axis, and means for retaining said head in adjusted position, said means including a part having a plurality of circumferentially disposed engaging parts, and a member positioned on the head adapted to engage any one of the engaging parts.

16. An attachment for tool posts comprising a member having a central opening the wall of which is continuous, the part being mounted for rotatable adjustment about a tool post, said member having an integral horizontally disposed cylindrical part with a longitudinal opening, a tool bar loosely positioned in said opening for rotatable and lengthwise adjustment, said bar having spaced transverse grooves therei in, and a locking pin to engage in one of said grooves to positively lock the tool bar on the adjustable member and against relative rotatable and lengthwise movement.

17 An attachment for tool posts comprising a tool bar support having a cylindrical opening the wall of which is continuous and unbroken, a tool barpositioned in said opening, means for supporting the same in place, said tool bar having adjacent one end thereof a transverse opening therethrough, a cutting tool positioned in said opening, a transversely disposed locking pin projecting through the tool bar, and one of the parts comprisingthe cutter and locking pin having an inclined engaging face whereby the cutter is locked in position by a wedging connection, substantially as and for the purpose described.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses.

HORACE P. PALMER.

Witnesses:

NATE E. CAFFERTY, ROBERT ,A. KELLEY. 

